Tekno RC EB48 User manual

Introduction
Additional equipment and parts needed:
2/3 channel radio transmitter and receiver
1/8th scale ESC and motor
High torque steering servo, optional brake servo
4-6s LiPo battery
1/8th scale buggy tires, wheels & CA glue
Paint for bady
MOD1 Pinion (TKR4171->TKR4190)
Or Tekno RC Traktion Drive / Elektri-Clutch slipper system (TKR4301X)
Tools needed:
Hex drivers (1.5mm, 2.0mm, 2.5mm)
Nut drivers (5.5mm, 7.0mm)
Hobby knife
Needle-nose pliers
Adjustable (Crescent) wrench (for shock assembly)
4mm turnbuckle wrench
Lexan Body Scissors
Disclaimer: Tekno RC is not responsible or liable for any property or personal damage, loss, or
injury incurred as a result of using this product. This kit is meant for use by persons 14 years of
age or older and in the strict connes of a legally permitted RC track or facility.
Warnings: Always double-check that your radio gear is working properly before operating vehicle.
Never operate the vehicle indoors (unless the RC track is an indoor facility). Use caution while
operating vehicle so as not to collide with people who may be turn mashalling or who might
otherwise not be aware that a fast moving RC vehicle is in the vicinity.
Warranty: We warrant that the parts included in this kit are free from defects. If you nd a
defective part in your kit, please contact us @ [email protected] and we will help you to resolve
the issue. We do not warranty parts that may be broken during operation of the vehicle or
otherwise. Refer to the end of this instruction manual for a listing of spare/replacement and
option parts. All spare parts and other info are available on our website (www.teknorc.com)
and through our network of domestic and international dealers and distributors.
This project is dedicated to Herb Lewis.
Thank you for purchasing the Tekno RC EB48 1/8th Electric 4WD Competition Buggy. The EB48
represents the state-of-the-art in 1/8th Electric Buggy technology. We hope you have as much fun
driving your new vehicle as we did developing it. We are always working on new projects, so please
check our website (www.teknorc.com) regularly for the latest news, parts, and kits. Thanks again.

TKR5145
TKR5144
Bag A
Center Differential
(overview)
TKR5112
TKR5112
TKR5237
TKR5141
TKR5140
TKR5140
TKR5143
TKR5113
*TKR5112X
(Option)
*TKR5115
(Option)
*TKR5112X
(Option)
TKR5146 x4
Step
A-2
TKR1325
M3x14mm Flat Head Screw
x4
TKR5144
TKR5145
Note: shims and
bearings must
be
installed
before outdrive
TKR1222 x6
TKR1222
13x16x0.1mm Diff Shim
x6
Step
A-1
Fill with 7000 wt oil to
the top of spider gears
TKRBB08165
Ball Bearing(8x16x5mm)
x2
TKR5144
Differential 0-rings
x2
x4
TKR5146
Differential Shims
(3x8x0.15mm)
TKR5145
Differential Shims (6x17mm)
x2
TKR1325 x4
TKRBB08165
Diff
Oil
3
Step
A-4
Step
A-3
Grease
Grease
Grease
Grease

TKR1325
M3x14mm Flat Head Screw
x8
Fill with 5000 wt front,
3000 wt rear,to the top
of spider gears
Note: Repeat for rear di
Note: Repeat for rear di
Note: Repeat for rear di
Note: Repeat for rear di
TKRBB08165
Ball Bearing(8x16x5mm)
x4
TKR5144
Differential 0-rings
x4
x8
TKR5146
Differential Shims
(3x8x0.15mm)
TKR5145
Differential Shims (6x17mm)
x4
TKR5114
*TKR5114X
(Option)
TKR5114
*TKR5114X
(Option)
TKR5113
TKR5111
TKR5143
TKR5141
TKR5140
TKR5140
Grease
Grease
Grease
Grease
Bag B
Front/Rear Differential
(overview)
Step
B-1
Step
B-3
Step
B-4
Step
B-2
Diff
Oil
4
TKR5145
TKR5144
TKRBB08165
TKR5146 x4
TKR5144
TKR5145
TKR1325 x4

TKR1525TKR1525TKR1525TKR1525
TKR5012
TKR5012
TKR5028
TKR5075 TKR5110
Front
Rear
Note: The front and rear of
the car use dierent inner
bulkheads.
The front is angled
whereas the rear is straight.
x2
TKR1222
TKR1603
TKRBB05114
TKRBB05114
TKR1226
TKR1222
TKR1222
TKR1525TKR1525
13x16x0.1mm Diff shim
Note: TKR1222 and TKR1226 Shims - The gear mesh should be tight without any binding. TKR1226 should
always be installed. Then test tment of the di with both TKR1222 shims on the gear-side of the di. If the di
turns freely without binding, continue to next step. If the di binds and does not turn freely (it will make a
grinding or crunching sound when spun), remove one TKR1222 shim from the gear side and install it onto the
other side of the di. Reassemble and test the mesh again. If it is still binding, remove the second TKR1222 shim
from the gear side and install it onto the other side of the di. When you are satised that you have the best
gear mesh possible continue to the next step.
TKR1222
TKRBB05114
TKR1525
M3x14mm Cap Head Screw
x6
TKR1603
M5x4mm Set Screw
TKRBB05114
Ball Bearing (5x11x4)
x2
x1
TKR1226
5x7x0.2mm shim
x1
TKR1603
Grease
Bag C
Front Gearbox
(overview)
Step
C-1
Step
C-2
Step
C-3
5
Thread
Lock

TKR5075
TKR5016
TKR5110
TKR5016
TKR5026
TKR5029
Front
TKR1222
TKR1222
TKR1525
TKR1529
TKR1222
13x16x0.1mm Diff Shim
x2
Rear
TKR1222
TKR1525
M3x14mm Cap Head Screw
x4
TKR1603
M5x4mm Set Screw
TKRBB05114
Ball Bearing (5x11x4)
x2
x1
TKR1529
M3x20mm Cap Head Screw
x1
TKR1226
5x7x0.2mm Shim
x1
Note: The front and rear of
the car use dierent inner
bulkheads.
The front is angled
whereas the rear is straight.
TKR1603
TKRBB05114
TKRBB05114
TKR1226
TKRBB05114
TKR1603
TKR1525TKR1525
Grease
Note: TKR1222 and TKR1226 Shims - The gear mesh should be tight without any binding. TKR1226 should
always be installed. Then test tment of the di with both TKR1222 shims on the gear-side of the di. If the di
turns freely without binding, continue to next step. If the di binds and does not turn freely (it will make a
grinding or crunching sound when spun), remove one TKR1222 shim from the gear side and install it onto the
other side of the di. Reassemble and test the mesh again. If it is still binding, remove the second TKR1222 shim
from the gear side and install it onto the other side of the di. When you are satised that you have the best
gear mesh possible continue to the next step.
Bag D
Rear Gearbox
(overview)
6
Step
D-1
Step
D-2
Step
D-3
Thread
Lock

TKR1524
TKR1524
TKR1529TKR1529
TKR1529
TKR1201
TKR1221
TKR1221
Most
downforce
least
downforce
Middle hole is stock position
TKR5026
TKR1529
M3x20mm Cap Head Screw
x4
TKR1524
M3x12mm Cap Head Screw
x8
TKR1201
M3 Lock Nut Black
x2
TKR1221
M3x8mm Washer
x2
Step
E-1
Step
E-2
Bag E
Wing Mount
7

TKR1333TKR1333
TKR1327
TKR5030
TKR5013
TKR5020
TKR5013
TKR5033
TKR5059 TKR5079
*TKR5079A
(option)
*TKR5049A
(option)
TKR5021
TKR5021
TKR5021
TKR5049
TKR1402
TKR1443
TKR1525
TKR1525
TKR1327
TKR1402
TKR1333
TKR1402
M3x8mm Button Head Screw
x4
TKR1333
M3x40mm Flat Head Screw
x2
TKR1443
M4x10mm Button Head Screw
x2
TKR5049
Pivot Ball Sway Bar
x2
TKR5079
Stabilizer Ball
x2
TKR1525
M3x14mm Cap Head Screw
x2
TKR1327
M3x16mm Flat Head Screw
x2
Stock Position
Stock Position
Step
F-1
Step
F-2
Bag f
Rear Suspension
(overview)
8

30.2
TKR1601
TKR1601
TKR1522TKR1522
TKR1601
TKR5086
TKR5082 - 2.4mm
TKR5086
TKR1522
M3x8mm Cap Head Screw
x2
TKR1601
M3x4mm Set Screw
x6
Install the Swar Bar Ball onto the
Sway Bar Wire until the end of
the wire is ush with the ball as
picture above.
Loosen the M3x4 set screw
(TKR1601) if
the anti-roll bar
does not
turn freely.
Note: Do not over-tighten
TKR1522
Bag f
Rear Sway Bar
9
(Option)
*TKR5080 - 2.2mm
*TKR5081 - 2.3mm
*TKR5083 - 2.5mm
*TKR5084 - 2.6mm
*TKR5085 - 2.8mm
*TKR5087 - 3.0mm
Step
F-3
Step
F-4
Thread
Lock

TKR5072
TKR5073
TKR5070
TKR5040
TKRBB13194
TKRBB08165
TKR5073
TKR5071
TKR1603
TKR5034
TKR5021TKR5021TKR5021
TKR1201
TKR1201
Hole "B" is the stock position
*Only use hole A in the arm with
hole A in the hub
*Only use hole B in the arm with
hole B in the hub
The outside hole oers greater stability and
is
recommended for bumpy open tracks.
Inside hole oers greater amount of steering
and is recommended for at technical tracks.
A B A B
Note: notch on pin
needs to line up
with set screw.
Note: TKR5040 hubs are
left/right interchangeable
TKR5071
M3x16.8mm Pin
x2
TKR5073
CV Joint Pin
x2
TKR1603
M5x4mm Set Screw
x2
TKR1201
M3 Locknut Black
x4
TKRBB13194
Ball Bearing (13x19x4)
x2
TKRBB08165
Ball Bearing (8x16x5)
x2
*TKR5071X
(Option)
Step
G-1
Step
G-2
Grease
Bag G
Rear Hub/CVA Assembly
10
Thread
Lock

TKR5051
TKR5050
TKR5051
TKR5052
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5053
33.60
Note: Notch always goes on
left side of vehicle
1
2
34
5
6
A B C D
Stock position is 2 / C
TKR1529
TKR1201
Right
TKR5051
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5051
Left
TKR5050
TKR1201
M3 Locknut Black
x4
TKR1529
M3x20mm Cap Head Screw
x4
TKR5053
Pivot Ball M3x6.8mm
No Flange
x2
TKR5052
Pivot Ball M3x6.8mm
x2
*TKR5053A
(Option)
TKR5053
*TKR5053A
(Option)
*TKR5052A
(Option)
TKR5052
*TKR5052A
(Option)
Step
G-3
Step
G-4
Bag G
Rear Camber Links
11

TKR5020
TKR5017
TKR5079
TKR5059
TKR5049
TKR5036
TKR5017
TKR5021
TKR5021
TKR1333
TKR1327TKR1327
TKR1525
TKR1443
TKR5049
Pivot Ball Sway Bar
x2
TKR5079
Stabilizer Ball
x2
TKR1443
M4x10mm Button Head Screw
x2
TKR1525
M3x14mm Cap Head Screw
x2
TKR1327
M3x16mm Flat Head Screw
TKR1333
M3x40mm Flat Head Screw
x2
x2
TKR1525
Stock Position
Stock Position
*TKR5049A
(Option)
Step
H-1
Step
H-2
Bag H
Front Suspension
(overview)
12
TKR1333
TKR1443
TKR1327

TKR1522
M3x8mm Cap Head Screw
x2
TKR1601
M3x4mm Set Screw
x6
30.2
TKR1601
TKR1601 TKR1522TKR1522
TKR1601
TKR5086
TKR5081 - 2.3mm
TKR5086
Install the Swar Bar Ball onto the
Sway Bar Wire until the end of
the wire is ush with the ball as
picture above.
Loosen the M3x4 set screw
(TKR1601) if
the anti-roll bar
does not
turn freely.
TKR1601
TKR1522
(Option)
*TKR5080 - 2.2mm
*TKR5082 - 2.4mm
*TKR5083 - 2.5mm
*TKR5084 - 2.6mm
*TKR5085 - 2.8mm
*TKR5087 - 3.0mm
Step
H-3
Step
H-4
Thread
Lock
Bag H
Front Sway Bar
13
Note: Do not over-tighten

TKR5072
TKR5073 TKR5042
TKR5041
TKR5054
TKR1603
TKRBB08144
TKRBB13194
TKR1445
TKR1445
TKR5071
TKR5071
TKR5073
TKR5070
TKR1448
TKR1448
TKR5055
M3 x6mm button
head screw can be used a
steering
stop if desired.
TKR5073
CV Joint Pin
x2
TKR5071
M3x16.8mm Pin
x2
TKR1445
M4x14mm Button Head Screw
x4
TKRBB13194
x2
TKRBB08144
x2
TKR5054
Spindle Pin Sleeve
x4
TKR5055
Suspension Pin Sleeve Front
x4
TKR1448
M4x18mm Button Head Screw
x4
*TKR5054A
(Option)
*TKR5071X
(Option)
*TKR5071X
(Option)
*TKR5055A
(Option)
TKR5054
*TKR5054A
(Option)
Step
I-1
Step
I-2
Grease
TKR1603
M5x4mm Set Screw
x2
Bag I
Front Steering
14
Note: notch on pin
needs to line up
with set screw.
Thread
Lock

TKR1529
23.60
Note: Notch always goes on left side of vehicle.
A
B
Stock position is 2B
TKR1529
TKR1201
TKR1201
TKR1201
M3 Lock Nut Black
x4
TKR1529
M3x20mm Cap Head Screw
x4
TKR5052
Pivot Ball M3x6.8mm
x2
TKR5053
Pivot Ball M3x6.8mm
No Flange
x2
TKR5051
TKR5050
TKR5051
TKR5052
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5053
Right
TKR5051
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5051
Left
TKR5050
*TKR5053A
(Option)
TKR5053
*TKR5053A
(Option)
*TKR5052A
(Option)
TKR5052
*TKR5052A
(Option)
1
2
34
5
6
Step
I-4
Bag I
Front Camber Links
15

TKR1323
TKRBB050825
TKRBB050825
5.50
31.60
Note: Notch always goes on
the left side of the
vehicle
Note: Apply a small
drop of oil for
easy installation.
Stock Position
(in center hole)
TKR5100
TKR5056
TKR5056
TKR5056
TKR5056
TKR5123 TKR5123
TKR5052
TKR5052
TKR5052
TKR5122
TKR5104
TKR5104
TKR5104
TKR5231
TKR5231
TKR1201
TKRBB06103TKRBB06103
TKRBB06103
TKR1529
TKR1221
Note: Stock bumpsteer setting is two washers
above and below the steering ball link.
2 x TKR1221
2 x TKR1221
TKR1221
TKRBB06103
TKR5122
TKR1323
M3x10mm Flat Head Screw
x2
TKR1201
M3 Lock Nut Black
x2
O-ring 16x12x2
TKR5231
x1
TKRBB06103
Ball Bearing (6x10x3)
x4
TKRBB050825
Ball Bearing (5x8x2.5)
x4
TKR1529
M3x20mm Cap Head Screw
x2
TKR5052
Pivot Ball M3x6.8mm
x4
TKR1221
M3x8mm Washer
x8
*TKR5052A
(Option)
TKR5052
*TKR5052A
(Option)
TKR5052
*TKR5052A
(Option)
TKR5052
*TKR5052A
(Option)
*TKR5052A
(Option)
*TKR5052A
(Option)
Step
J-1
Step
J-2
Step
J-3
Step
J-4
Thread
Lock
Thread
Lock
Bag J
Steering Assembly
(overview)
16

TKR5107
TKR1323
TKR1201
TKR1443
TKR5102
TKR1443
Note: on steps K-2, K-3 and K-4 Do not
tighten the
screws all the way down until
the assembly steps are complete. Position
the entire front assembly on the chassis
and tighten each screw evenly.
TKR1522 TKR5018
TKR1443
TKR1346
TKR1344
TKR1344TKR1344
TKR1343
TKR5062
Note: Inititial bumpsteer setting is two
washers above and below the steering ball link.
TKR5121
TKR1522
M3x8mm Cap Head Screw
x1
TKR1346
M4x15mm Flat Head Screw
x2
TKR1343
M4x10mm Flat Head Screw
x2
TKR1344
M4x12mm Flat Head Screw
x4
TKR1201
M3 Lock Nut Black
x2
TKR1323
M3x10mm Flat Head Screw
x1
TKR1443
M4x10mm Button Head Screw
x5
TKR1529
M3x20mm Cap Head Screw
x2
TKR1221
M3x8mm Washer
x8
Note Step K-2:
Line up the bottom of the
steering posts (TKR5102)
with the corresponding recess
cut in the
chassis .
Step
K-3
Step
K-4
Step
K-1 Step K-2
*TKR5102A
(Option)
Thread
Lock
Thread
Lock
Bag K
Front End Assembly
17

TKR5107
TKR5107
TKR5210
TKR1522
TKR5078 TKR1443
TKR5062
TKR1344
TKR1343 x5
TKR1443
TKR5062
TKR5076
TKR1344 x5
TKR1522
M3x8mm Cap Head Screw
x4
TKR1343
M4x10mm Flat Head Screw
x5
TKR1443
M4x10mm Button Head Screw
x2
TKR1344
M4x12mm Flat Head Screw
x7
*TKR5217
(Option)
*TKR5077
(Option)
Step
L-1
Step
L-2
Step
L-3
Thread
Lock
Thread
Lock
Note: If running Traktion Drive or
Electri-Clutch slipper systems, reverse
di direction as shown above.
(Direct drive - Mod 1 pinion)
Bag L
Center/Rear Assembly
18

Shock Filling Instructions
For both front and rear shocks
19
Step 1. Extend the shock shaft all the way down. Fill the shock with oil
until the body is approximately 90% full.
Step 2. Slowly pump the shock shaft up and down about 3-5 times to release
air bubble from underneath the piston.
Step 3. Let the shock rest vertically with the shock shaft fully extended for ve
minutes or until all the air bubbles have released.
Step 4. Push the shaft in to the amount of rebound desired. For example, to
achieve 0% rebound push the shaft in all the way (just before the piston
holes breach the surface of the oil). For 50% rebound, push the shaft in half way.
Make sure that you match the rebound amount between the left and right shocks.
We've found that running 0% rebound in both front and rear shocks gives
great overall performance.
Step 5. Next you will top o the shock with oil. The goal is not to ll the body completely,
but only to ll it enough so that when the bladder is placed on top there will be no
air underneath. If you do overll the shock, it won’t hurt performance, it will just spill
out and make a little bit of a mess.
Step 6. In this step you will be placing the bladder on top the shock body. While holding the
shock shaft in the desired position from step 4, push the bladder down onto the
shock body using your ngertip to fully seat the lip of the bladder onto the rim of the
shock body. If done correctly a small amount of oil should bleed out. If no oil is released
you may have some air trapped underneath the bladder and you will need to remove
the bladder and repeat step 5. Once the bladder is seated onto the shock body, pull
the shock shaft down a few millimeters. This will “suck” the bladder down and hold it
in place. Carefully wipe away the excess oil that was bled, being careful not the
disrupt the seal of the bladder on the shock body.
Step 7. While continuing to hold the shock vertically, screw the shock cap down onto
the body and tighten fully. You can use an adjustable wrench to hold the bottom
of the shock while tightening the shock cap down.
The following steps and information will provide you with the
proper way to ll and bleed your Tekno RC EB48 shocks.
After thorough testing, we've found it's easiest to complete steps 1 through 3 on each
shock before moving onto step 4. By the time you've nished step 3
on the last shock the rst one will be ready for step 4.
You can build the shocks in any manner you prefer, but we’ve found this way provides the
best handling and more consistent shocks. They will also last longer between rebuilds.
Use part #’s TKR6008 (pistons and guides) and TKR6009
(o-ring pack) to rebuild your shocks regularly.

TKR6037
TKR6023
TKR6005
TKR1211
TKR6008
TKR5027 TKR1202
TKR1529
Note: slot in spring perch
should face outside of vehicle.
Stock shock position is
the middle hole on arm
and the second hole from
outside on tower.
Note: front shocks use
shorter shock bodies -
TKR6002,
shorter shock shafts - TKR6004,
shorter springs - TKR6037
and shorter shock boots - TKR6023
TKR6015
TKR6008 TKR6009
TKR6002
Hex 4035 - M2.5
TKR1200
x2
TKR1529
M3x20mm Cap Head Screw
x2
TKR1202
M4 Lock Nut Black
x2
TKR1211
M3 Lock Nut Flange Black
x2
TKR5027
Shock Stand Off
x2
TKR6003
TKR6009TKR6009
TKR6013
Note: O-ring goes over
threads on shock body.
*TKR6018
(Option)
*TKR6035
*TKR6036
*TKR6038
*TKR6039
(Option)
TKR1200
TKR6008
TKR6004
TKR6005
TKR5049
*TKR5049A
(Option)
*TKR6004T
(Option)
Fill oil level just
below the
top of
the shock body.
Note:
shaft guide
orientation
Step
M-1
Step
M-2
Step
M-3
Note: Apply a small
drop of oil for
easy installation.
Note: Use green
slime or oil on
shock shaft
threads AND
O-rings to
prevent tearing
and leaking.
Bag M
Front Shock Assembly
20